The Degrees of Freedom for the Sample Variance
A) Are $\infty$

Multiple Choice

The degrees of freedom for the sample variance

A) are equal to the sample size.
B) are equal to the sample size minus one.
C) can vary between - $\infty$ and + $\infty$ .
D) are equal to the sample size minus one and can vary between - $\infty$ and + $\infty$ .